Sql EntityFramework.dll中发生System.StackOverflowException“”
我面临entityframework的问题。查询中不存在递归循环，但我不知道为什么会遇到此异常。你可以看到代码Sql EntityFramework.dll中发生System.StackOverflowException“”,sql,sql-server,linq,linq-to-sql,entity-framework-4,Sql,Sql Server,Linq,Linq To Sql,Entity Framework 4,我面临entityframework的问题。查询中不存在递归循环，但我不知道为什么会遇到此异常。你可以看到代码 var checkList = from checklist in db.Checklists join code in db.Codes on checklist.iCodeID equals code.iCodeID where code.bDeleted == false &a
var checkList = from checklist in db.Checklists
join code in db.Codes on checklist.iCodeID equals code.iCodeID
where code.bDeleted == false && code.bObsolete == false
join codeGroup in db.CodeGroups on code.iGroupID equals codeGroup.iGroupID
where codeGroup.bDeleted == false && codeGroup.bInspection == true
join codeInspectionType in db.CodeInspectionTypeVs on checklist.LongKey.Substring(0, 6) equals DbFunctions.Right("00000" + codeInspectionType.InspectionTypeID, 6)
where checklist.bDeleted == false
orderby checklist.iChecklistID
select new
{
checklist.iChecklistID,
InspectionTypeID = checklist.LongKey.Substring(0, 6).ToString(),
codeInspectionType.bSubInspection,
SortSeq = db.CodesTreeSelectUDF(null, checklist.LongKey, null, null, null).Select(x => x.SortKey).FirstOrDefault(),
codeGroup.iGroupID,
codeGroup.GroupDesc,
checklist.bPromptForQty,
checklist.bShowInTree,
DescCombo = new { codeGroup.DescCombo1, codeGroup.DescCombo2, codeGroup.DescCombo3, codeGroup.DescCombo4, codeGroup.DescCombo5, codeGroup.DescCombo6, codeGroup.DescCombo7, codeGroup.DescCombo8, codeGroup.DescCombo9, codeGroup.DescCombo10, codeGroup.DescCombo11, codeGroup.DescCombo12, codeGroup.DescCombo13, codeGroup.DescCombo14, codeGroup.DescCombo15, codeGroup.DescCombo16, codeGroup.DescCombo17, codeGroup.DescCombo18, codeGroup.DescCombo19, codeGroup.DescCombo20, codeGroup.DescCombo21, codeGroup.DescCombo22, codeGroup.DescCombo23, codeGroup.DescCombo24, codeGroup.DescCombo25, codeGroup.DescCombo26, codeGroup.DescCombo27, codeGroup.DescCombo28, codeGroup.DescCombo29, codeGroup.DescCombo30 },
codeGroup.DescText1,
codeGroup.bTextAbbreviation1,
codeGroup.DescText2,
codeGroup.bTextAbbreviation2,
codeGroup.DescText3,
codeGroup.bTextAbbreviation3,
codeGroup.DescText4,
codeGroup.bTextAbbreviation4,
codeGroup.DescText5,
codeGroup.bTextAbbreviation5,
codeGroup.DescText6,
codeGroup.bTextAbbreviation6,
codeGroup.DescText7,
codeGroup.bTextAbbreviation7,
codeGroup.DescText8,
codeGroup.bTextAbbreviation8,
codeGroup.DescText9,
codeGroup.bTextAbbreviation9,
codeGroup.DescText10,
codeGroup.bTextAbbreviation10,
codeGroup.DescInt1,
codeGroup.DescInt2,
codeGroup.DescInt3,
codeGroup.DescInt4,
codeGroup.DescInt5,
codeGroup.DescInt6,
codeGroup.DescInt7,
codeGroup.DescInt8,
codeGroup.DescInt9,
codeGroup.DescInt10,
codeGroup.DescNum1,
codeGroup.DescNum2,
codeGroup.DescNum3,
codeGroup.DescNum4,
codeGroup.DescNum5,
codeGroup.DescNum6,
codeGroup.DescNum7,
codeGroup.DescNum8,
codeGroup.DescNum9,
codeGroup.DescNum10,
codeGroup.DescBool1,
codeGroup.BoolOnText1,
codeGroup.BoolOffText1,
codeGroup.DescBool2,
codeGroup.BoolOnText2,
codeGroup.BoolOffText2,
codeGroup.DescBool3,
codeGroup.BoolOnText3,
codeGroup.BoolOffText3,
codeGroup.DescBool4,
codeGroup.BoolOnText4,
codeGroup.BoolOffText4,
codeGroup.DescBool5,
codeGroup.BoolOnText5,
codeGroup.BoolOffText5,
codeGroup.DescBool6,
codeGroup.BoolOnText6,
codeGroup.BoolOffText6,
codeGroup.DescBool7,
codeGroup.BoolOnText7,
codeGroup.BoolOffText7,
codeGroup.DescBool8,
codeGroup.BoolOnText8,
codeGroup.BoolOffText8,
codeGroup.DescBool9,
codeGroup.BoolOnText9,
codeGroup.BoolOffText9,
codeGroup.DescBool10,
codeGroup.BoolOnText10,
codeGroup.BoolOffText10,
codeGroup.DescBool11,
codeGroup.BoolOnText11,
codeGroup.BoolOffText11,
codeGroup.DescBool12,
codeGroup.BoolOnText12,
codeGroup.BoolOffText12,
codeGroup.DescBool13,
codeGroup.BoolOnText13,
codeGroup.BoolOffText13,
codeGroup.DescBool14,
codeGroup.BoolOnText14,
codeGroup.BoolOffText14,
codeGroup.DescBool15,
codeGroup.BoolOnText15,
codeGroup.BoolOffText15,
codeGroup.DescBool16,
codeGroup.BoolOnText16,
codeGroup.BoolOffText16,
codeGroup.DescBool17,
codeGroup.BoolOnText17,
codeGroup.BoolOffText17,
codeGroup.DescBool18,
codeGroup.BoolOnText18,
codeGroup.BoolOffText18,
codeGroup.DescBool19,
codeGroup.BoolOnText19,
codeGroup.BoolOffText19,
codeGroup.DescBool20,
codeGroup.BoolOnText20,
codeGroup.BoolOffText20,
codeGroup.DescBool21,
codeGroup.BoolOnText21,
codeGroup.BoolOffText21,
codeGroup.DescBool22,
codeGroup.BoolOnText22,
codeGroup.BoolOffText22,
codeGroup.DescBool23,
codeGroup.BoolOnText23,
codeGroup.BoolOffText23,
codeGroup.DescBool24,
codeGroup.BoolOnText24,
codeGroup.BoolOffText24,
codeGroup.DescBool25,
codeGroup.BoolOnText25,
codeGroup.BoolOffText25,
codeGroup.DescBool26,
codeGroup.BoolOnText26,
codeGroup.BoolOffText26,
codeGroup.DescBool27,
codeGroup.BoolOnText27,
codeGroup.BoolOffText27,
codeGroup.DescBool28,
codeGroup.BoolOnText28,
codeGroup.BoolOffText28,
codeGroup.DescBool29,
codeGroup.BoolOnText29,
codeGroup.BoolOffText29,
codeGroup.DescBool30,
codeGroup.BoolOnText30,
codeGroup.BoolOffText30,
DescMoney = new { codeGroup.DescMoney1, codeGroup.DescMoney2, codeGroup.DescMoney3, codeGroup.DescMoney4, codeGroup.DescMoney5, codeGroup.DescMoney6, codeGroup.DescMoney7, codeGroup.DescMoney8, codeGroup.DescMoney9, codeGroup.DescMoney10 },
DescDate = new { codeGroup.DescDate1, codeGroup.DescDate2, codeGroup.DescDate3, codeGroup.DescDate4, codeGroup.DescDate5, codeGroup.DescDate6, codeGroup.DescDate7, codeGroup.DescDate8, codeGroup.DescDate9, codeGroup.DescDate10 },
DescMemo = new { codeGroup.DescMemo1, codeGroup.DescMemo2, codeGroup.DescMemo3, codeGroup.DescMemo4, codeGroup.DescMemo5, codeGroup.DescMemo6, codeGroup.DescMemo7, codeGroup.DescMemo8, codeGroup.DescMemo9, codeGroup.DescMemo10 },
codeGroup.Bookmark,
codeGroup.bProtected,
codeGroup.bMultiPicklist,
codeGroup.Notes,
code.iCodeID,
LongKey = db.CodesTreeSelectUDF(null, checklist.LongKey, null, null, null).Select(x => x.LongKey).FirstOrDefault(),
code.CodeSortCode,
code.Description,
code.bDefault,
CodeCombo = new
{
code.CodeCombo1,
code.CodeCombo2,
code.CodeCombo3,
code.CodeCombo4,
code.CodeCombo5,
code.CodeCombo6,
code.CodeCombo7,
code.CodeCombo8,
code.CodeCombo9,
code.CodeCombo10,
code.CodeCombo11,
code.CodeCombo12,
code.CodeCombo13,
code.CodeCombo14,
code.CodeCombo15,
code.CodeCombo16,
code.CodeCombo17,
code.CodeCombo18,
code.CodeCombo19,
code.CodeCombo20,
code.CodeCombo21,
code.CodeCombo22,
code.CodeCombo23,
code.CodeCombo24,
code.CodeCombo25,
code.CodeCombo26,
code.CodeCombo27,
code.CodeCombo28,
code.CodeCombo29,
code.CodeCombo30
},
code.CodeText1,
code.CodeTextAbbreviation1,
code.CodeText2,
code.CodeTextAbbreviation2,
code.CodeText3,
code.CodeTextAbbreviation3,
code.CodeText4,
code.CodeTextAbbreviation4,
code.CodeText5,
code.CodeTextAbbreviation5,
code.CodeText6,
code.CodeTextAbbreviation6,
code.CodeText7,
code.CodeTextAbbreviation7,
code.CodeText8,
code.CodeTextAbbreviation8,
code.CodeText9,
code.CodeTextAbbreviation9,
code.CodeText10,
code.CodeTextAbbreviation10,
CodeInt = new { code.CodeInt1, code.CodeInt2, code.CodeInt3, code.CodeInt4, code.CodeInt5, code.CodeInt6, code.CodeInt7, code.CodeInt8, code.CodeInt9, code.CodeInt10 },
CodeNum = new { code.CodeNum1, code.CodeNum2, code.CodeNum3, code.CodeNum4, code.CodeNum5, code.CodeNum6, code.CodeNum7, code.CodeNum8, code.CodeNum9, code.CodeNum10 },
CodeBool = new
{
code.CodeBool1,
code.CodeBool2,
code.CodeBool3,
code.CodeBool4,
code.CodeBool5,
code.CodeBool6,
code.CodeBool7,
code.CodeBool8,
code.CodeBool9,
code.CodeBool10,
code.CodeBool11,
code.CodeBool12,
code.CodeBool13,
code.CodeBool14,
code.CodeBool15,
code.CodeBool16,
code.CodeBool17,
code.CodeBool18,
code.CodeBool19,
code.CodeBool20,
code.CodeBool21,
code.CodeBool22,
code.CodeBool23,
code.CodeBool24,
code.CodeBool25,
code.CodeBool26,
code.CodeBool27,
code.CodeBool28,
code.CodeBool29,
code.CodeBool30
},
CodeMoney = new { code.CodeMoney1, code.CodeMoney2, code.CodeMoney3, code.CodeMoney4, code.CodeMoney5, code.CodeMoney6, code.CodeMoney7, code.CodeMoney8, code.CodeMoney9, code.CodeMoney10 },
CodeDate = new { code.CodeDate1, code.CodeDate2, code.CodeDate3, code.CodeDate4, code.CodeDate5, code.CodeDate6, code.CodeDate7, code.CodeDate8, code.CodeDate9, code.CodeDate10 },
CodeMemo = new { code.CodeMemo1, code.CodeMemo2, code.CodeMemo3, code.CodeMemo4, code.CodeMemo5, code.CodeMemo6, code.CodeMemo7, code.CodeMemo8, code.CodeMemo9, code.CodeMemo10 },
code.CodeURL,
code.SessionVariable,
code.bMandatory,
code.PopUp,
code.bDrillDown,
code.Icon
};
An unhandled exception of type 'System.StackOverflowException' occurred in EntityFramework.dll
请帮忙 经过一番挣扎，我自己找到了答案
db.ConvertLongKeyUDF (LongKey) replace with
db.ConvertLongKeyUDF (LongKey) As ConvertedtLongKey
CodeGroup.Notes replace with
CodeGroup.Notes As codeGroupNotes
CodeGroup.bProtected replace with
CodeGroup.bProtected As codeGroup_bProtected
code.Notes replace with
codes.Notes As codeNotes
code.bProtected replace with
codes.bProtected As code_bProtected
由于这些行生成相同名称的字段，因此产生错误 很抱歉这么说，但这个查询太疯狂了。在进一步尝试之前，您应该规范化您的数据模型。随后，在单独的步骤中构建UI的各个部分。为什么要在一个不可维护的整体中完成这一切？除此之外，如果不能运行代码，甚至无法运行代码，StackOverflowException很难发现。但我很确定LINQtoSQL会被它试图生成的SQL代码数量所限制。@Gert Arnold如果这是客户的要求该怎么办。我知道这很疯狂，但我该怎么做呢。@Gert Arnold有没有其他办法来解决这个问题。正如我提到的。当我从select语句中跳过一些字段时，它就可以正常工作了。但对于完整数据，它会抛出stackOverflow异常。我已经给了您一些提示。不要躲在需求后面。如何在技术上实现它们取决于您。